On Monday 03 August 2009 20:25:43 Avi Kivity wrote:
> On 08/03/2009 09:17 AM, Sheng Yang wrote:
> > Copy u64 from guest result in chaos.
> >
> > Also fix a mistake of still using old macro rather than new variable().
> >
> > Signed-off-by: Sheng Yang<[email protected]>
> > ---
> > arch/x86/kvm/vmx.c | 2 +-
> > arch/x86/kvm/x86.c | 2 +-
> > 2 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> > index 7931c72..c5aaa1b 100644
> > --- a/arch/x86/kvm/vmx.c
> > +++ b/arch/x86/kvm/vmx.c
> > @@ -2199,7 +2199,7 @@ static int alloc_identity_pagetable(struct kvm
> > *kvm) goto out;
> >
> > kvm->arch.ept_identity_pagetable = gfn_to_page(kvm,
> > - VMX_EPT_IDENTITY_PAGETABLE_ADDR>> PAGE_SHIFT);
> > + kvm->arch.ept_identity_map_addr>> PAGE_SHIFT);
>
> This is a fix, but as Jan says, separate patch.
Sure. (and thanks Jan's comment :) )
>
> > out:
> > up_write(&kvm->slots_lock);
> > return r;
> > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> > index 2539e9a..977b705 100644
> > --- a/arch/x86/kvm/x86.c
> > +++ b/arch/x86/kvm/x86.c
> > @@ -2178,7 +2178,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
> > goto out;
> > break;
> > case KVM_SET_IDENTITY_MAP_ADDR: {
> > - u64 ident_addr;
> > + unsigned long ident_addr;
> >
> > r = -EFAULT;
> > if (copy_from_user(&ident_addr, argp, sizeof ident_addr))
>
> This doesn't look right. Consider 32-bit userspace running on a 32-bit
> kernel and the same userspace running on a 64-bit kernel. We need to
> copy the same size in both cases.
Yeah... Then I think I should fix the userspace. Would update the patch.
--
regards
Yang, Sheng
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